This AR-15 Match Grade barrel is chambered in 6.5 Grendel with a 16-inch length and 1:7 twist rate for optimal accuracy and performance.AR-15 Match Grade 6.5 Grendel Barrel16-inch barrel length with mid-length gas system1:7 twist rate optimized for 6.5 Grendel cartridgeGunner profile contour for balanced weight and rigidityNitride finish for enhanced durability and corrosion resistance5/8-24 muzzle threads for suppressor/muzzle device compatibilityBlack finishPerfect for precision shooting hunting and long-range applications where the 6.5 Grendel cartridge excels. The gunner profile provides an excellent balance of accuracy and maneuverability for versatile AR-15 builds.